Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
5 × 10 = ______
67 + 10 = ______
48 − 10 = ______
39 + 20 = ______
28 + 20 = ______
54 − 10 = ______
70 + 20 = ______
7 × 10 = ______
47 + 10 = ______
40 − 10 = ______
2 × 10 = ______
64 + 20 = ______
29 + 10 = ______
82 − 10 = ______
57 + 20 = ______
79 − 10 = ______
76 + 10 = ______
3 × 10 = ______
54 + 10 = ______
27 + 10 = ______
